Magnetizer Box - Bar Magnet, 110/120V AC, 60Hz, Revitalizes iron, nickel, cobalt, and alnico horseshoe and bar magnets in seconds. Simply place magnets in the 25x25 mm holes and press the button to make old magnets new again
Decimeter-wave range Lecher, Determining the current and voltage maxima on a Lecher line Investigating the current and voltage on a Lecher line with a loop dipole
Demonstration Transformer placed in Gratnells tray, A large scale transformer, ideal for classroom, The coils, fitted with intermediary outputs providing many transformation ratios, Weight (lb): 27.7, Length (in):17.7, Width (in):15.4, Height (in):9.8